Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add mhrsdev/AI-Agent-Skills-Library --skill mobile-headlessui-accessible-overlaygit clone --depth 1 https://github.com/mhrsdev/AI-Agent-Skills-LibraryWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/mhrsdev/ai-agent-skills-library/mobile-headlessui-accessible-overlay)<a href="https://agentmods.dev/skills/mhrsdev/ai-agent-skills-library/mobile-headlessui-accessible-overlay"><img src="https://agentmods.dev/badge/skills/mhrsdev/ai-agent-skills-library/mobile-headlessui-accessible-overlay/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/mhrsdev/ai-agent-skills-library/mobile-headlessui-accessible-overlay"><img src="https://agentmods.dev/badge/skills/mhrsdev/ai-agent-skills-library/mobile-headlessui-accessible-overlay.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00039 | $0.00283 |
| Opus 5 | $0.00019 | $0.00142 |
| Sonnet 5 | $0.00008 | $0.00057 |
| Haiku 4.5 | $0.00004 | $0.00028 |
Grade A, and why
mobile-headlessui-accessible-overlay scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Mobile Headless UI Accessible Overlay
Use this skill for accessible mobile menus, popovers, dialogs, and disclosure panels inspired by tailwindlabs/headlessui.
Primary source:
Focus areas:
- Semantic menu, dialog, popover, and disclosure behavior.
- ARIA state synchronization.
- Focus trap and focus restore.
- Escape key and outside click behavior.
- Touch-first interaction without losing keyboard support.
Checklist:
- Use native interactive elements before custom roles.
- Set
aria-expandedon disclosure/menu buttons. - Link controls to panels with
aria-controlswhere useful. - Move focus into modal dialogs and restore focus on close.
- Provide escape, backdrop/outside click, and navigation close paths.
- Ensure tap targets are large enough and do not depend on hover.
Common fixes:
- If a mobile menu opens visually but screen readers do not understand it, repair button semantics and state.
- If keyboard focus remains behind a dialog, add focus management.
- If outside click fails on touch devices, handle pointer events consistently.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 11d ago First seen · 34 lines · 39 tokens per session scan A 550fb0e4cba5
mobile-headlessui-accessible-overlay is a skill published in the GitHub repository mhrsdev/AI-Agent-Skills-Library (6 stars, last pushed 2mo ago), licensed MIT. It adds 39 tokens to every session and 283 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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